Also carefully read the word of caution section on David's link (which is absent in the jewel version of the docs), a cache tier in front of an ersure coded data pool for RBD is almost always a bad idea.
Caspar Met vriendelijke groet, Caspar Smit Systemengineer SuperNAS Dorsvlegelstraat 13 1445 PA Purmerend t: (+31) 299 410 414 e: caspars...@supernas.eu w: www.supernas.eu 2017-12-26 23:12 GMT+01:00 David Turner <drakonst...@gmail.com>: > Please use the version of the docs for your installed version of ceph. > Now the Jewel in your URL and the Luminous in mine. In Luminous you no > longer need a cache tier to use EC with RBDs. > > http://docs.ceph.com/docs/luminous/rados/operations/cache-tiering/ > > On Tue, Dec 26, 2017, 4:21 PM Karun Josy <karunjo...@gmail.com> wrote: > >> Hi, >> >> We are using Erasure coded pools in a ceph cluster for RBD images. >> Ceph version is 12.2.2 Luminous. >> >> ----- >> http://docs.ceph.com/docs/jewel/rados/operations/cache-tiering/ >> ----- >> >> Here it says we can use a Cache tiering infront of ec pools. >> To use erasure code with RBD we have a replicated pool to store metadata >> and ecpool as data pool . >> >> Is it possible to setup cache tiering since there is already a replicated >> pool that is being used ? >> >> >> >> >> >> >> >> >> >> >> Karun Josy >> _______________________________________________ >> ceph-users mailing list >> ceph-users@lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >
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